package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // DO 后期需要进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equalsIgnoreCase(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    // 修改密码
    @Override
    public void editPassword(PasswordEditDTO password) {
        Long empId = password.getEmpId();
        String newPassword = password.getNewPassword();
        String oldPassword = password.getOldPassword();
        // 对旧密码进行md5加密
        oldPassword = DigestUtils.md5DigestAsHex(oldPassword.getBytes());
        //查询旧密码 进行比较
        Employee employee = employeeMapper.getById(empId);
        if (!oldPassword.equals(employee.getPassword())){
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }










        //密码正确 对新密码进行加密 修改原密码
        newPassword = DigestUtils.md5DigestAsHex(newPassword.getBytes());

        employeeMapper.editpassword(empId,newPassword);
    }

    // 启用禁用
    @Override
    public void startOrStop(Integer status, Long id) {
        Employee employee=new Employee();
        employee.setId(id);
        employee.setStatus(status);
        employeeMapper.startOrStop(employee);
    }

    // 分页查询
    @Override
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
        List<Employee> rows = employeeMapper.pageQuery(employeePageQueryDTO);
        Page<Employee> p = (Page<Employee>) rows;
        return new PageResult(p.getTotal(),p.getResult());

    }

    // 新增员工
    @Override
    public void add(EmployeeDTO employee) {
        Employee emp = new Employee();
        BeanUtils.copyProperties(employee,emp);
        //设置默认密码
        emp.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        //设置状态为启用
        emp.setStatus(StatusConstant.ENABLE);
//        //设置创建时间和更新时间
//        emp.setCreateTime(LocalDateTime.now());
//        emp.setUpdateTime(LocalDateTime.now());
//        //设置创建人id和修改人id
//        emp.setCreateUser(BaseContext.getCurrentId());
//        emp.setUpdateUser(BaseContext.getCurrentId());
        //保存到数据库
        employeeMapper.insert(emp);
    }

    // 根据id查询员工
    @Override
    public Employee getEmpById(Long id) {
        Employee emp = employeeMapper.getById(id);
        return emp;
    }

    // 修改员工
    @Override
    public void edit(EmployeeDTO employee) {
        employeeMapper.updateEmployee(employee);
    }

}
